參數資料
| 型號： | PIC16LF1527-I/MR |
| 廠商： | Microchip Technology |
| 文件頁數： | 70/94頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU PIC 28KB FLASH 64QFN |
| 產品培訓模塊： | Configurable Logic Cell 8-bit PIC® Microcontroller Portfolio |
| 標準包裝： | 40 |
| 系列： | PIC® XLP™ 16F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 20MHz |
| 連通性： | I²C，LIN，SPI，UART/USART |
| 外圍設備： | 欠壓檢測/復位，POR，PWM，WDT |
| 輸入/輸出數： | 54 |
| 程序存儲器容量： | 28KB（16K x 14） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 1.5K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 數據轉換器： | A/D 30x10b |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 64-VFQFN 裸露焊盤 |
| 包裝： | 管件 |
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PIC16(L)F1526/27
DS41458A-page 38
Preliminary
2011 Microchip Technology Inc.
3.4
Stack
All devices have a 16-level x 15-bit wide hardware
space is not part of either program or data space. The
PC is PUSHed onto the stack when CALL or CALLW
instructions are executed or an interrupt causes a
branch. The stack is POPed in the event of a RETURN,
RETLW
or a RETFIE instruction execution. PCLATH is
not affected by a PUSH or POP operation.
The stack operates as a circular buffer if the STVREN
bit is programmed to ‘0’ (Configuration Word 2). This
means that after the stack has been PUSHed sixteen
times, the seventeenth PUSH overwrites the value that
was stored from the first PUSH. The eighteenth PUSH
overwrites the second PUSH (and so on). The
STKOVF and STKUNF flag bits will be set on an Over-
flow/Underflow, regardless of whether the Reset is
enabled.
3.4.1
ACCESSING THE STACK
The stack is available through the TOSH, TOSL and
STKPTR registers. STKPTR is the current value of the
Stack Pointer. TOSH:TOSL register pair points to the
TOP of the stack. Both registers are read/writable. TOS
is split into TOSH and TOSL due to the 15-bit size of the
PC. To access the stack, adjust the value of STKPTR,
which will position TOSH:TOSL, then read/write to
TOSH:TOSL. STKPTR is 5 bits to allow detection of
overflow and underflow.
During normal program operation, CALL, CALLW and
Interrupts will increment STKPTR while RETLW,
RETURN
, and RETFIE will decrement STKPTR. At any
time STKPTR can be inspected to see how much stack
is left. The STKPTR always points at the currently used
place on the stack. Therefore, a CALL or CALLW will
increment the STKPTR and then write the PC, and a
return will unload the PC and then decrement STKPTR.
accessing the stack.
FIGURE 3-5:
ACCESSING THE STACK EXAMPLE 1
Note 1:
There are no instructions/mnemonics
called PUSH or POP. These are actions
that occur from the execution of the
CALL,
CALLW
, RETURN, RETLW and
RETFIE
instructions or the vectoring to
an interrupt address.
Note:
Care should be taken when modifying the
STKPTR while interrupts are enabled.
0x0F
0x0E
0x0D
0x0C
0x0B
0x0A
0x09
0x08
0x07
0x06
0x05
0x04
0x03
0x02
0x01
0x00
0x0000
STKPTR = 0x1F
Initial Stack Configuration:
After Reset, the stack is empty. The
empty stack is initialized so the Stack
Pointer is pointing at 0x1F. If the Stack
Overflow/Underflow Reset is enabled, the
TOSH/TOSL registers will return ‘0’. If
the Stack Overflow/Underflow Reset is
disabled, the TOSH/TOSL registers will
return the contents of stack address 0x0F.
0x1F
STKPTR = 0x1F
Stack Reset Disabled
(STVREN = 0)
Stack Reset Enabled
(STVREN = 1)
TOSH:TOSL
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| PIC16LF1527T-I/MR | 功能描述:8位微控制器 -MCU 14KB Flash RAM 768b nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| PIC16LF1527T-I/PT | 功能描述:8位微控制器 -MCU 14KB Flash RAM 768b nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| PIC16LF1613-I/SL | 制造商:Microchip Technology Inc 功能描述:3.5KB FLASH, 256 RAM, 32MHZ INT. OSC, 10BIT ADC, ZCD, WWDT, - Rail/Tube 制造商:Microchip Technology Inc 功能描述:3.5KB Flash, 256 RAM, 32MHz Int. Osc, 10bit ADC, ZCD, WWDT, CRC, 14 SOIC .150in |
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| PIC16LF1703-I/SL | 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 2K FLASH 14SOIC |
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